Another case where creating a dedicated helper allows for cleaner code that
shows exactly what communication happens with the device when toggling its
power.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>